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US8141961B2 - Vehicle-use brake device - Google Patents

Vehicle-use brake device Download PDF

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Publication number
US8141961B2
US8141961B2 US12/361,727 US36172709A US8141961B2 US 8141961 B2 US8141961 B2 US 8141961B2 US 36172709 A US36172709 A US 36172709A US 8141961 B2 US8141961 B2 US 8141961B2
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US
United States
Prior art keywords
wheel
pressure
electromagnetic open
base body
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/361,727
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English (en)
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US20090195060A1 (en
Inventor
Yutaka Nishikawa
Kazuya Takenouchi
Masaie Kato
Shinji Takayanagi
Yoko Uno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Assigned to HONDA MOTOR CO., LTD. reassignment HONDA MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KATO, MASAIE, NISHIKAWA, YUTAKA, TAKAYANAGI, SHINJI, TAKENOUCHI, KAZUYA, UNO, YOKO
Publication of US20090195060A1 publication Critical patent/US20090195060A1/en
Application granted granted Critical
Publication of US8141961B2 publication Critical patent/US8141961B2/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3225—Systems specially adapted for single-track vehicles, e.g. motorcycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
    • B62L3/08—Mechanisms specially adapted for braking more than one wheel

Definitions

  • the present invention relates to a vehicle-use brake device in which first electromagnetic open/close valves changing over communication/interruption between master cylinders which output liquid pressures due to operations of brake operators and wheel brakes and second electromagnetic open/close valves changing over communication/interruption between liquid-pressure generating means which are configured to generate liquid pressures due to operations of electrically-operated actuators and the wheel brakes are arranged in a base body.
  • JP-A-2006-117076 or the like there has been known a so-called by-wire-type vehicle-use brake device which applies a liquid pressure to a wheel brake by controlling the liquid pressure from a liquid-pressure generating means which is configured to generate the liquid pressure due to an operation of an electrically-operated actuator corresponding to a brake operation quantity in a state that the connection between a master cylinder and a wheel brake is interrupted.
  • a plurality of electromagnetic open/close valves are provided for opening or closing brake liquid-pressure passages
  • a plurality of pressure sensors are provided for detecting pressures in the brake liquid-pressure passages and the like are arranged in a base body to form a unit which is referred to as a hydraulic control unit.
  • the arrangement of the respective electromagnetic open/close valves and the respective pressure sensors is designed so as to miniaturize the base body, that is, the hydraulic control unit.
  • first and second electromagnetic open/close valves which are connected to output ports formed on one side surface of the base body are arranged on the base body in a state that the operational axes of the first and second electromagnetic open/close valves are arranged on a plane parallel to the above-mentioned one side surface.
  • liquid pressure passages which connect the first and second electromagnetic open/close valves and the output ports become complicated thus increasing the working man-hours. Accordingly, simplification of the liquid pressure passages formed in the base body has been also requested.
  • the present invention has been made under such circumstances, and it is an object of an embodiment of the present invention to provide a vehicle-use brake device which can realize the simplification of brake liquid pressure passages formed in a base body along with the miniaturization of the base body.
  • a vehicle-use brake device in which first electromagnetic open/close valves changing over communication/interruption between master cylinders which output liquid pressures corresponding to operations of brake operators and wheel brakes occurs, and second electromagnetic open/close valves changing over communication/interruption between liquid-pressure generation means which are configured to generate liquid pressures corresponding to operations of electrically-operated actuators and the wheel brakes are arranged in a base body.
  • Output ports which are connected to the wheel brakes are formed in one flat side surface of the base body, and the first and second electromagnetic open/close valves which have operational axes thereof arranged on a first plane orthogonal to said one side surface are mounted on one surface of the base body orthogonal to said one side surface from the same direction.
  • stroke simulators apply pseudo reactional forces corresponding to operation quantities of the brake operators to the master cylinders at the time of closing the first electromagnetic open/close valves are arranged in the base body with stroke directions thereof set parallel to the first plane.
  • input ports are connected to the master cylinders with brake liquid pressure passages each of which has both ends thereof communicably connected to the input port and the output port and interposes the first electromagnetic open/close valve therein.
  • Branch passages are provided each of which is branched from the brake liquid pressure passage between the first electromagnetic open/close valve and the input port and is connected to the stroke simulator are arranged in the base body.
  • Third electromagnetic open/close valves are provided each of which is interposed in the branch passage so as to change over communication/interruption between the master cylinder and the stroke simulator and first pressure sensors each of which is connected to the branch passage between the third electromagnetic open/close valve and the stroke simulator so as to detect a pressure on the stroke simulator side are, in a state that an operation axis of the third electromagnetic open/close valves and the first pressure sensors are arranged on a second plane parallel to the first plane and the stroke direction of the stroke simulators, mounted on the base body from the same direction as the mounting direction of the first and second electromagnetic open/close valves.
  • second pressure sensors each of which is connected to the brake liquid pressure passage between the input port and the first electromagnetic open/close valve so as to detect a liquid pressure on the master cylinder side, are arranged in the base body between the first and second planes.
  • a brake lever 15 and a brake pedal 16 of an embodiment correspond to the brake operators of the present invention
  • a mounting surface 37 a of the embodiment corresponds to said one surface of the base body of the present invention
  • a first side surface 37 b of the embodiment corresponds to said one side surface of the base body of the present invention
  • a first input port 58 of the embodiment corresponds to the input port of the present invention
  • a first brake liquid-pressure passage 77 of the embodiment corresponds to the brake liquid-pressure passage of the present invention.
  • the first and second electromagnetic open/close valves are mounted on said one surface of the base body orthogonal to said one side surface of the base body from the same direction in a state wherein the operational axes of the first and second electromagnetic open/close valves are arranged on the same first plane orthogonal to said one side surface of the base body.
  • the first plane orthogonally intersects with said one side surface of the base body in which the output ports connected to the wheel brakes are formed and the first and second electromagnetic open/close valves are respectively connected to the output ports.
  • the liquid-pressure passages which respectively connect the first and second electromagnetic open/close valves and the output ports are formed into a simple shape which extends linearly parallel to the first plane thus reducing working man-hours in forming the holes in the base body.
  • the stroke simulator is arranged in the base body with stroke directions thereof set parallel to the first plane.
  • the stroke simulator is arranged in the base body with stroke directions thereof set parallel to the first plane.
  • the branch passage which is branched from the brake liquid pressure passage having both ends thereof communicably connected to the input port and the output port which are connected to the master cylinder and interposing the first electromagnetic open/close valve therein and is connected to the stroke simulator
  • the third electromagnetic open/close valve changing over communication/interruption between the master cylinder and the stroke simulator is interposed
  • the first pressure sensor which detects the pressure on a side of the stroke simulator is connected to the branch passage
  • the operation axis of the third electromagnetic open/close valve and the first pressure sensor are arranged on the second plane arranged parallel to the first plane and the stroke direction of the stroke simulator.
  • the third electromagnetic open-close valve and the first pressure sensor in the direction orthogonal to the first plane and the second plane thus contributing to the miniaturization of the base body.
  • portions which are connected to the third electromagnetic open/close valve and the first pressure sensor are formed into a simple linear shape parallel to the second plane thus reducing the working man-hours in forming the branch passage in the base body.
  • the third electromagnetic open/close valve and the first pressure sensor are mounted on the base body in the same direction as the first and second electromagnetic open/close valves.
  • the second pressure sensor which is connected to the brake liquid pressure passage between the input port and the first electromagnetic open/close valve is arranged in the base body between the first and second planes.
  • the first electromagnetic open/close valve, the second electromagnetic open/close valve, the third electromagnetic open/close valve, the first pressure sensor and the second pressure sensor can be arranged in the base body in a compact manner thus realizing the further miniaturization of the base body.
  • FIG. 1 is a view showing the constitution of a motorcycle-use brake device
  • FIG. 2 is a transverse cross-sectional plan view of a hydraulic control unit and is a cross-sectional view taken along a line 2 - 2 in FIG. 3 ;
  • FIG. 3 is a cross-sectional view taken along a line 3 - 3 in FIG. 2 ;
  • FIG. 4 is a cross-sectional view taken along a line 4 - 4 in FIG. 2 ;
  • FIG. 5 is a cross-sectional view taken along a line 5 - 5 in FIG. 2 ;
  • FIG. 6 is a cross-sectional view taken along a line 6 - 6 in FIG. 2 ;
  • FIG. 7 is a cross-sectional view taken along a line 7 - 7 in FIG. 2 ;
  • FIG. 8 is a perspective view showing the structure of a passage hole indicated by an arrow 8 in FIG. 2 in a simplified manner in a state wherein a base body is viewed in a see-through manner;
  • FIG. 9 is a perspective view showing the structure of a passage hole indicated by an arrow 9 in FIG. 2 in a simplified manner in a state that the base body is viewed in a see-through manner;
  • FIG. 10 is a left side view of a motorcycle.
  • FIG. 1 to FIG. 10 are views showing one embodiment of the present invention.
  • a front-wheel-use wheel brake BF which the motorcycle includes, it is possible to apply a liquid pressure outputted from a front-wheel-use master cylinder MF corresponding to a operation of a brake lever 15 constituting a brake operation element and, at the same time, it is also possible to apply a liquid pressure outputted from a front-wheel-use liquid-pressure generation means 17 F.
  • a front-wheel-use hydraulic control unit 18 F is interposed between the front-wheel-use master cylinder MF and the front-wheel-use liquid-pressure generation means 17 F and the front-wheel-use wheel brake BF.
  • a rear-wheel-use wheel brake BR it is possible to apply a liquid pressure outputted from a rear-wheel-use master cylinder MR in response to an operation of a brake pedal 16 constituting a brake operation element and, at the same time, it is also possible to apply a liquid pressure outputted from a rear-wheel-use liquid-pressure generation means 17 R.
  • a rear-wheel-use hydraulic control unit 18 R is interposed between the rear-wheel-use master cylinder MR and the rear-wheel-use liquid-pressure generation means 17 R and the rear-wheel-use wheel brake BR.
  • the front-wheel-use liquid-pressure generation means 17 F generates the liquid pressure with an operation of an electrically-operated motor 19 which constitutes an electrically-operated actuator.
  • the front-wheel-use liquid-pressure generation means 17 F includes the electrically-operated motor 19 , a piston 22 which defines a hydraulic chamber 21 between a cylinder body 20 and the piston 22 and is slidably fitted in the cylinder body 20 , a return spring 23 which is arranged between the cylinder body 20 and the piston 22 in a shrinkable manner so as to bias the piston 22 in the direction that a volume of the hydraulic chamber 21 is increased, a pushing shaft 24 which is coaxially and contiguously connected to the piston 22 from a side opposite to the hydraulic chamber 21 , and a gear mechanism 26 which is connected to an output shaft of the electrically-operated motor 19 while including a gear 25 which is coaxially and threadedly engaged with the pushing shaft 24 by way of a ball screw (not shown in the drawing).
  • the rear-wheel-use liquid-pressure generation means 17 R is constituted in the substantially same manner as the front-wheel-use liquid-pressure generation means 17 F.
  • the detailed explanation of the rear-wheel-use liquid-pressure generation means 17 R is omitted by illustrating the means 17 R in the drawing and giving the same numerals to portions of the means 17 R corresponding to portions of the front-wheel-use liquid-pressure generation means 17 F.
  • the front-wheel-use hydraulic control unit 18 F is configured such that a first electromagnetic open-close valve 28 changing over communication/interruption between the front-wheel-use master cylinder MF and the front-wheel-use wheel brake BF, a second electromagnetic open-close valve 29 changing over communication/interruption between the front-wheel-use liquid-pressure generation means 17 F and the front-wheel-use wheel brake BF, a stroke simulator 30 which applies a pseudo reactional force corresponding to an operational quantity of the brake lever 15 to the front-wheel-use master cylinder MF at the time of closing the first electromagnetic open-close valve 28 , a third electromagnetic open-close valve 31 changing over communication/interruption between the stroke simulator 30 and the front-wheel-use master cylinder MF, a first one-way valve 32 which is connected to the second electromagnetic open-close valve 29 in a juxtaposed manner so as to allow the flow of a brake liquid from the front-wheel-use liquid-pressure generation means 17 F toward the front-wheel-use wheel brake BF side, a second one-way valve 33 which is
  • the first pressure sensor 34 is provided for obtaining an operational load of the brake lever 15 by detecting an output liquid pressure of the front-wheel-use master cylinder MF at the time of closing the first electromagnetic open/close valve 28 and the second pressure sensor 35 is provided for performing a fail-safe diagnosis.
  • a difference of a predetermined value or more is generated between a detected value of the second pressure sensor 35 and a detected value of the first pressure sensor 34 , it is determined that abnormality occurs in the vehicle-use brake device.
  • a detected value of the third pressure sensor 36 is served to a liquid-pressure feedback control at the time of controlling the output liquid pressure of the front-wheel-use liquid-pressure generating means 17 F based on the detected value of the first pressure sensor 34 .
  • the first electromagnetic open/close valve 28 is a normally-open electromagnetic open/close valve
  • the second and third electromagnetic open/close valves 29 , 31 are a normally-closed electromagnetic open/close valve. Open/close operations of the first to third electromagnetic open/close valves 28 , 29 , 31 and an operation of the electrically-operated motor 19 of the front-wheel-use liquid-pressure generating means 17 F are controlled by a control unit 39 to which a battery 38 is connected.
  • a detected value of a front-wheel-speed sensor 40 F and values detected by the first to third pressure sensors 34 , 35 , 36 are inputted, and the control unit 39 controls the open/close operations of the first to third electromagnetic open/close valves 28 , 29 , 31 and the operation of the electrically-operated motor 19 based on the detected value of the front wheel speed sensor 40 F and the detected values of the first to third pressure sensors 34 to 36 .
  • an alarm lamp 41 is connected to the control unit 39 .
  • the first electromagnetic open/close valve 28 assumes an valve-open state
  • the second and third electromagnetic open/close valves 29 , 31 assume a valve-closed state
  • the electrically-operated motor 19 assumes a non-operated state
  • the alarm lamp 41 is in a lighting state.
  • a liquid pressure is outputted from the front-wheel-use master cylinder MF by operating the brake lever 15
  • the liquid pressure acts on the front-wheel-use wheel brake BF by way of the first electromagnetic open/close valve 28 .
  • the control unit 39 When operation of the motorcycle is started, the control unit 39 performs an initial diagnosis. When it is determined that the system is normally operated, an alarm lamp 41 is turned off. After the traveling of the motorcycle is started, the system assumes a standby state where the third electromagnetic open/close valve 31 is opened so that the front-wheel-use master cylinder MF assumes a state where the front-wheel-use master cylinder MF is communicably connected with the stroke simulator 30 .
  • the control unit 39 When the brake lever 15 is operated during the standby state and a liquid pressure which is equal to or more than a predetermined value is detected by the first pressure sensor 34 , in response to the liquid pressure detected by the first pressure sensor 34 , the control unit 39 closes the first electromagnetic open/close valve 28 and, at the same time, opens the second electromagnetic open/close valve 29 . Further, the control unit 39 operates the electrically-operated motor 19 of the front-wheel-use liquid-pressure generating means 17 F thus controlling an output liquid pressure of the front-wheel-use liquid-pressure generating means 17 F so as to set the output pressure of the front-wheel-use liquid-pressure generating means 17 F detected by the third pressure sensor 36 to a pressure corresponding to the detected value of the first pressure sensor 34 . Accordingly, a liquid pressure outputted from the front-wheel-use liquid-pressure generating means 17 F corresponding to an operation load of the brake lever 15 acts on the front-wheel-use wheel brake BF.
  • the rear-wheel-use hydraulic control unit 18 R is constituted in the same manner as the above-mentioned front-wheel-use hydraulic control unit 18 F.
  • the detailed explanation of the rear-wheel-use hydraulic control unit 18 R is omitted by illustrating the unit 18 R in the drawing and giving the same numerals to portions of the unit 18 R corresponding to portions of the front-wheel-use hydraulic control unit 18 F.
  • the control unit 39 uses a detected value of a rear-wheel speed sensor 40 R in place of a detected value of the front-wheel speed sensor 40 F which is used for a hydraulic control of the front-wheel-use hydraulic control unit 18 F.
  • control unit 39 can, by performing a hydraulic control using the rear-wheel-use hydraulic control unit 18 R as well as a hydraulic control using the front-wheel-use hydraulic control unit 18 F in response to the operation of the brake lever 15 , perform a front/rear braking force distribution control which allows the front-wheel-use and rear-wheel-use wheel brakes BF, BR to perform a braking operation so as to apply braking forces distributed to the front wheel and the rear wheel.
  • control unit 39 can, by performing the hydraulic control using the front-wheel-use hydraulic control unit 18 F as well as the hydraulic control using the rear-wheel-use hydraulic control unit 18 R in response to the operation of the brake pedal 16 , also perform the front/rear braking force distribution control which allows the front-wheel-use and rear-wheel-use wheel brakes BF, BR to perform a braking operation so as to apply braking forces distributed to the front wheel and the rear wheel.
  • the base body 37 includes a mounting surface 37 a which constitutes one surface of the base body 37 , and first to fourth side surfaces 37 b , 37 c , 37 d , 37 e which are orthogonally contiguously formed with the mounting surface 37 a .
  • the base body 37 is formed into a rectangular parallelepiped shape by cast molding using light metal such as an aluminum alloy as a material, and first to eighth bottomed mounting holes 44 to 51 are formed in the base body 37 in a state that these mounting holes 44 to 51 open at the mounding surface 37 a.
  • first to third electromagnetic open/close valves 28 , 29 , 31 are respectively mounted in a state that solenoid portions 28 a , 29 a , 31 a of the respective first to third electromagnetic open/close valves 28 , 29 , 31 project from the mounting surface 37 a .
  • first and second one-way valves 32 , 33 are respectively inserted. After insertion of the one-way valves 32 , 33 , opening ends of the fourth and fifth mounting holes 47 , 48 are liquid-hermetically closed using steel balls 52 , 53 . As shown in FIG.
  • first to third pressure sensors 34 to 36 are respectively mounted in a state that portions of the first to third pressure sensors 34 to 36 project from the mounting surface 37 a . That is, on the mounting surface 37 a of the base body 37 , the first to third electromagnetic open/close valves 28 , 29 and 31 , the first and second one-way valves 32 , 33 , and first to third pressure sensors 34 to 36 are mounted in the same direction while assuming the direction orthogonal to the mounting surface 37 a as the mounting direction.
  • a synthetic-resin-made cover 55 is mounted on the mounting surface 37 a so as to cover the solenoid portions 28 a , 29 a , 31 a of first to third electromagnetic open/close valves 28 , 29 , 31 and projecting portions of the first to third pressure sensors 34 to 36 from the base body 37 .
  • a printed circuit board 56 which is electrically connected to the solenoid portions 28 a , 29 a , 31 a and the first to third pressure sensors 34 to 36 is fixedly arranged, and a coupler portion 55 a in which connection terminals (not shown in the drawing) connected to the printed circuit board 56 are arranged is integrally formed with the cover 55 .
  • an output port 57 and a first input port 58 which open at portions of the first side surface 37 b of the base body 37 arranged close to the mounting surface 37 a
  • a second input port 59 which opens at the second side surface 37 c on a side opposite to the first side surface 37 b are formed.
  • These ports 57 , 58 and 59 are formed in the base body 37 with axes thereof arranged orthogonal to the first and second side surfaces 37 b , 37 c , that is, parallel to the mounting surface 37 a .
  • the output port 57 is connected to the front-wheel-use wheel brake BF
  • the first input port 58 is connected to the front-wheel-use master cylinder MF
  • the second input port 59 is connected to the front-wheel-use liquid-pressure generating means 17 F.
  • a distance between the axis of the second input port 59 and the mounting surface 37 a is set larger than a distance between the respective axes of the output port 57 and the first input port 58 and the mounting surface 37 a.
  • the operational axes of the first electromagnetic open/close valve 28 and the second electromagnetic open/close valve 29 are arranged on a first plane PL 1 (see FIG. 2 ) which orthogonally intersects with the first side surface 37 b of the base body 37 .
  • an axis of the third pressure sensor 36 that is, an axis of the eighth mounting hole 51 is arranged on the first plane PL 1 at a position where the second electromagnetic open/close valve 29 and the second mounting hole 45 are sandwiched between the first electromagnetic open/close valve 28 and the first mounting hole 44 .
  • the operational axes of the first and second electromagnetic open/close valves 28 , 29 are arranged and, at the same time, an axis of the third pressure sensor 36 is also arranged.
  • the stroke simulator 30 is mounted in a state that the stroke direction of the stroke simulator 30 is arranged parallel to the first plane PL 1 .
  • a bottomed housing hole 60 having an axis thereof parallel to the first plane PL 1 is formed in the base body 37 in a state wherein the housing hole 60 opens at the first side surface 37 b.
  • the stroke simulator 30 includes a piston 62 which is liquid-hermetically and slidably fitted in the housing hole 60 while defining an oil chamber 61 between an inner end of the housing hole 60 and the piston 62 and includes a shaft portion 62 coaxially extending in the direction opposite to the oil chamber 61 as an integral part thereof.
  • a cap 63 is provided which is liquid-hermetically fitted in an opening end portion of the housing hole 60 with a retaining ring 64 which is mounted on an inner surface of the opening end portion of the housing hole 60 in a state that the retaining ring 64 is axially engaged with the cap 63 from the outside in the axial direction so as to prevent removal of the cap 63 from the housing hole 60 .
  • a cylindrical resilient body 65 surrounds the shaft portion 62 a of the piston 62 in a state wherein an outer end of the cylindrical resilient body 65 is brought into contact with the cap 63 with a rubber 66 which is formed into a cylindrical shape surrounding the shaft portion 62 a and is interposed between the resilient body 65 and the piston 62 .
  • a slide hole 67 that allows for the slide movement of the shaft portion 62 a of the piston 62 therein is formed.
  • a connection pipe portion 69 which forms a release passage 68 communicably connected with the slide hole 67 is integrally formed in the cap 63 .
  • a rubber hose 70 is connected to the connection pipe portion 69 .
  • the piston 62 strokes in the axial direction of the housing hole 60 , that is, in the direction parallel to the first plane PL 1 while deflecting the resilient body 65 and the rubber 66 .
  • a second plane PL 2 (see FIG. 2 ) which is arranged parallel to the first plane PL 1 and the stroke direction of the stroke simulator 30 is arranged between the stroke simulator 30 and the first plane PL 1 , and the third electromagnetic open/close valve 31 and the first pressure sensor 34 are mounted on the base body 37 between the stroke simulator 30 and the first plane PL 1 in a state wherein the operational axis of the third electromagnetic open/close valve 31 , that is, the axis of the third mounting hole 46 and the axis of the first pressure sensor 34 , that is, the axis of the sixth mounting hole 49 are arranged on the second plane PL 2 .
  • the axis of the second one-way valve 33 that is, the axis of the fifth mounting hole 48 is arranged on the second plane PL 2 at a position where the third electromagnetic open/close valve 31 and the third mounting hole 46 are sandwiched between the first pressure sensor 34 and the sixth mounting hole 49 .
  • the operational axis of the third electromagnetic open/close valve 31 is arranged on the second plane PL 2 .
  • the axes of the first pressure sensor 34 and the second one-way valve 33 are also arranged on the second plane PL 2 .
  • the second pressure sensor 35 and the first one-way valve 32 are mounted on the base body 37 in a state wherein the second pressure sensor 35 and the first one-way valve 32 are arranged between the first and second planes PL 1 , PL 2 .
  • the axis of the second pressure sensor 35 that is, the axis of the seventh mounting hole 50 and the axis of the first one-way valve 32 , that is, the axis of the fourth mounting hole 47 are arranged on a third plane PL 3 arranged parallel to the first and second planes PL 1 , PL 2 .
  • the output port 57 is formed in the base body 37 in a state wherein the axis of the output port 57 is arranged at a position slightly displaced toward a side opposite to the second plane PL 2 from the first plane PL 1 .
  • the first input port 58 is formed in the base body 37 in a state wherein the axis of the first input port 58 is arranged at a position slightly displaced toward the first plane PL 1 side from the second plane PL 2 .
  • the second input port 59 is formed in the base body 37 in a state wherein the axis of the second input port 59 is arranged on the first plane PL 1 .
  • a first passage hole 71 which is communicably connected with axially intermediate portions of the fifth mounting hole 48 and the third mounting hole 46 at positions displaced from the axes of the fifth and third mounting holes 48 , 46 is formed between the first input port 58 and the third mounting hole 46 coaxially with the first input port 58 .
  • a second passage hole 72 which traverses the first passage hole 71 is formed between the first input port 58 and the fifth mounting hole 48 in a state wherein an opening portion of the second passage hole 72 leading to the mounting surface 37 a of the base body 37 is liquid-hermetically closed by a steel ball 73 .
  • a third passage hole 74 which makes an inner end portion of the second passage hole 72 and an inner end portion of the first mounting hole 44 communicably connected with each other is formed in the base body 37 .
  • the third passage hole 74 is formed from a side of the third side surface 37 d which connects the first and second side surfaces 37 b , 37 c on a side of the first plane PL 1 out of the first to third planes PL 1 to PL 3 .
  • An opening end of the third passage hole 74 leading to the third side surface 37 d is liquid-hermetically closed by a steel ball 75 .
  • a fourth passage hole 76 which is communicably connected with axially intermediate portions of the first and second mounting holes 44 , 45 at positions displaced from axes of the first and second mounting holes 44 , 45 is formed in a state wherein the fourth passage hole 76 is coaxially communicably connected with the output port 57 .
  • a first brake liquid-pressure passage 77 which has both ends thereof respectively communicably connected with the first input port 58 and the output port 57 and, at the same time, interposes the first electromagnetic open/close valve 28 therein is constituted. That is, the first brake liquid-pressure passage 77 includes a portion of the first passage hole 71 between the first input port 58 and the second passage hole 72 , the second passage hole 72 , the third passage hole 74 , and a portion of the fourth passage hole 76 between the first mounting hole 44 and the output port 57 .
  • the first electromagnetic open/close valve 28 is interposed between the third passage hole 74 and the fourth passage hole 76 .
  • a fifth passage hole 78 which orthogonally traverses the third passage hole 74 in the first brake liquid-pressure passage 77 is formed in the base body 37 in a state wherein the fifth passage hole 78 has an outer end thereof opened at the first side surface 37 b and has an inner end thereof communicably connected with an inner end of the seventh mounting hole 50 , and an outer-end opening portion of the fifth passage hole 78 is liquid-hermetically closed by a steel ball 79 (see FIG. 2 ). Due to such construction, in the first brake liquid-pressure passage 77 , the second pressure sensor 35 is connected between the first input port 58 and the first electromagnetic open/close valve 28 .
  • a sixth passage hole 80 which is communicably connected with the second input port 59 by making an inner end of the eighth mounting hole 51 and the second input port 59 communicably connected with each other, a seventh passage hole 81 which has an outer end thereof opened at the third side surface 37 d , extends in the direction orthogonal to the sixth passage hole 80 and is communicably connected with an inner end portion of the eighth mounting hole 51 , an eighth passage hole 82 which has an outer end thereof opened at the second side surface 37 c and extends parallel to the sixth passage hole 80 and passes an inner end of the fourth mounting hole 47 , and a ninth passage hole 83 which has an outer end thereof opened at the third side surface 37 c , extends parallel to the seventh passage hole 81 and is orthogonally communicably connected with an inner end of the eighth passage hole 82 while passing an inner end of the second mounting hole 45 are formed.
  • Outer ends of the seventh passage hole 81 and the ninth passage hole 83 are respectively liquid-hermetically closed by steel balls 84
  • a second brake liquid-pressure passage 86 which has both ends thereof respectively communicably connected with the second input port 59 and the output port 57 and interposes the second electromagnetic open/close valve 29 therein is constructed.
  • the third pressure sensor 36 is connected to the second brake liquid-pressure passage 86 between the second input port 59 and the second electromagnetic open/close valve 29 .
  • the second brake liquid-pressure passage 86 includes the sixth passage hole 80 , a portion of the seventh passage hole 81 between the eighth mounting hole 51 and the eighth passage hole 82 , a portion of the eighth passage hole 82 between the seventh passage hole 81 and the ninth passage hole 83 , a portion of the ninth passage hole 83 between the eighth hole passage 82 and the second mounting hole 45 , and the fourth passage hole 76 .
  • the second electromagnetic open/close valve 29 is interposed between the ninth passage hole 83 and the fourth passage hole 76 .
  • a bleeder 88 on which a cap 87 is detachably mounted is threadedly engaged with an outer end portion of the eighth passage hole 82 .
  • a tenth passage hole 89 which has an outer end thereof opened at the third side surface 37 d , traverses an inner end of the fourth passage hole 76 , and has an inner end thereof opened at an intermediate portion of the fourth mounting hole 47 is formed.
  • the outer end of the tenth passage hole 89 is liquid-hermetically closed by a steel ball 90 . Due to such construction, the first one-way valve 32 which bypasses the second electromagnetic open/close valve 29 is connected to the second brake liquid-pressure passage 86 .
  • an eleventh passage hole 93 which has an outer end thereof opened at the second side surface 37 c , has an axis thereof arranged on the second plane PL 2 and is orthogonally communicably connected with inner ends of the fifth mounting hole 48 , the third mounting hole 46 and the sixth mounting hole 49 , a twelfth passage hole 94 which has an outer end thereof opened at the fourth side surface 37 e facing a side opposite to the third side surface 37 d , extends in the direction orthogonal to the eleventh passage hole 93 and has an inner end thereof communicably connected with an inner end of the sixth mounting hole 49 , a thirteenth passage hole 95 which has an outer end thereof opened at the second side surface 37 c and is coaxially communicably connected with the housing hole 60 , and a fourteenth passage hole 96 which has an outer end thereof opened at the mounting surface 37 a , orthogonally traverses an intermediate portion of the thirteenth passage hole 95 , and has an inner end thereof orthogonally communicably connected with the
  • Outer ends of the eleventh passage hole 93 , the twelfth passage hole 94 and the fourteenth passage hole 96 are liquid-hermetically closed by steel balls 97 , 98 , 99 . Further, a bleeder 101 on which a cap 100 is detachably mounted is threadedly engaged with an outer end portion of the thirteenth passage hole 95 .
  • a branch passage 102 which is branched from the first brake liquid-pressure passage 77 between the first electromagnetic open/close valve 28 and the first input port 58 , is connected to the stroke simulator 30 , and interposes the third electromagnetic open/close valve 31 therein is constituted.
  • the first pressure sensor 34 is connected to the branch passage 102 between the third electromagnetic open/close valve 31 and the stroke simulator 30 , and the second one-way valve 33 is connected to the branch passage 102 in a state wherein the second one-way valve 33 bypasses the third electromagnetic open/close valve 31 .
  • the branch passage 102 includes a portion of the first passage hole 71 from the second passage hole 72 to the third mounting hole 46 , a portion of the eleventh passage hole 93 from the third mounting hole 46 to the sixth mounting hole 49 , a portion of the twelfth passage hole 94 from the third mounting hole 49 to the fourteenth passage hole 96 , a portion of the fourteenth passage hole 96 from the twelfth passage hole 94 to the thirteenth mounting hole 95 , and a portion of the thirteenth passage hole 95 from the fourteenth passage hole 96 to the housing hole 60 .
  • the third electromagnetic open/close valve 31 is interposed between the first passage hole 71 and the eleventh passage hole 93 , and the second one-way valve 33 which bypasses the third electromagnetic open/close valve 31 is also interposed between the first passage hole 71 and the eleventh passage hole 93 .
  • a vehicle body frame F of the motorcycle mounts a head pipe 104 on a front end thereof.
  • the head pipe 104 steerably supports a front fork 103 which pivotally supports a front wheel WF thereon.
  • the front-wheel-use wheel brake BF is mounted on the front wheel WF.
  • a rear wheel WR on which the rear-wheel-use wheel brake BR is mounted is pivotally supported on a rear end portion of a swing arm 105 , and a front end portion of the swing arm 105 is vertically tiltably supported on the vehicle body frame F.
  • An engine E which generates power for rotating the rear wheel WR is arranged between the front wheel WF and the rear wheel WR and is mounted on the vehicle body frame F.
  • a fuel tank 106 is mounted on the vehicle body frame F above the engine E, and a pillion seat 107 arranged behind the fuel tank 106 is supported on the vehicle body frame F.
  • a portion of the vehicle body frame F and a portion of the engine E are covered with a vehicle body cover 108 .
  • the front-wheel-use liquid-pressure generating means 17 F, the front-wheel-use hydraulic control unit 18 F, the rear-wheel-use liquid-pressure generating means 17 R, the rear-wheel-use hydraulic control unit 18 R, and the control unit 39 are arranged.
  • the first and second electromagnetic open/close valves 28 , 29 and the third pressure sensor 36 are mounted on the mounting surface 37 a of the base body 37 from the same direction in a state wherein the operational axes of these components are arranged on the same first plane PL 1 . Accordingly, a width necessary for the arrangement of the first and second electromagnetic open/close valves 28 , 29 and the third pressure sensor 36 in the direction orthogonal to the first plane PL 1 can be set to a small value thus contributing to the miniaturization of the base body 37 .
  • first plane PL 1 orthogonally intersects with the first side surface 37 b of the base body 37 in which the output ports 57 connected to the wheel brakes BF, BR are formed, and the first and second electromagnetic open/close valves 28 , 29 are also respectively connected to the output ports 57 .
  • a liquid-pressure passage which respectively connects the first and second electromagnetic open/close valves 28 , 29 with the output ports 57 , the fourth passage hole 76 in this embodiment, can be formed into a simple shape linearly extending parallel to the first plane PL 1 thus reducing the working man-hours in forming the holes in the base body 37 .
  • the stroke simulator 30 is arranged in the base body 37 with the stroke direction thereof set parallel to the first plane PL 1 .
  • a width of the base body 37 in the direction orthogonal to the first plane PL 1 can be made small thus contributing to the miniaturization of the base body 37 .
  • the third electromagnetic open/close valve 31 changing over communication/interruption between the master cylinders MF, MR and the stroke simulator 30 is provided.
  • the first pressure sensor 34 which detects the pressure on a side of the stroke simulator 30 is connected to the portion of the branch passage 102 .
  • the operation axis of the third electromagnetic open/close valve 31 and the axes of the first pressure sensor 34 and the second one-way valve 33 are arranged on the second plane PL 2 arranged parallel to the first plane PL 1 and the stroke direction of the stroke simulator 30 . Accordingly, it is possible to decrease the width necessary for the arrangement of the first to third electromagnetic open/close valves 28 , 29 , 31 , the first and second one-way valves 32 , 33 , and the first and third pressure sensors 34 , 36 in the direction orthogonal to the first and second planes PL 1 , PL 2 thus contributing to the miniaturization of the base body 37 .
  • the portions which are connected to the third electromagnetic open/close valve 31 and the first pressure sensor 34 are formed into a simple linear shape parallel to the second plane PL 2 . Accordingly, it is possible to reduce working man-hours in forming the branch passage 102 in the base body 37 .
  • the third electromagnetic open/close valve 31 and the first pressure sensor 34 are mounted on the base body 37 in the same direction as the first and second electromagnetic open/close valves 28 , 29 . Thus, it is possible to efficiently assemble the first to third electromagnetic open/close valves 28 , 29 , 31 and the first pressure sensor 34 to the base body 37 .
  • the second and third pressure sensors 35 , 36 and the first and second one-way valves 32 , 33 are also mounted on the base body 37 in the same direction as the first to third electromagnetic open/close valves 28 , 29 and 31 .
  • the second and third pressure sensors 35 , 36 and the first and second one-way valves 32 , 33 are also mounted on the base body 37 in the same direction as the first to third electromagnetic open/close valves 28 , 29 and 31 .
  • the second pressure sensor 35 which is connected to the first brake liquid-pressure passage 77 between the first input port 58 and the first electromagnetic open/close valve 28 and the first one-way valve 32 are arranged in the base body 37 between the first and second planes PL 1 , PL 2 . Accordingly, the first to third electromagnetic open/close valves 28 , 29 , 31 , the first and second one-way valves 32 , 33 and the first to third pressure sensors 34 to 36 can be collectively arranged in the base body 37 in a compact manner thus realizing the further miniaturization of the base body 37 .
  • the present invention is broadly applicable not only to the motorcycle explained in the above-mentioned embodiment but also to a three-wheeled vehicle or other vehicles.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)
US12/361,727 2008-01-31 2009-01-29 Vehicle-use brake device Expired - Fee Related US8141961B2 (en)

Applications Claiming Priority (2)

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JP2008022049A JP5025510B2 (ja) 2008-01-31 2008-01-31 車両用ブレーキ装置
JP2008-022049 2008-01-31

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US8141961B2 true US8141961B2 (en) 2012-03-27

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JP (1) JP5025510B2 (ja)

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WO2013147248A1 (ja) * 2012-03-30 2013-10-03 日信工業株式会社 ハウジングおよびマスタシリンダ装置
JP5953635B2 (ja) * 2013-12-12 2016-07-20 日信工業株式会社 液圧発生装置
JP6217027B2 (ja) * 2014-05-08 2017-10-25 日立オートモティブシステムズ株式会社 ブレーキ装置
JP2019006347A (ja) * 2017-06-28 2019-01-17 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング 液圧制御装置、鞍乗型乗物用ブレーキシステム、及び、鞍乗型乗物
CN110027521B (zh) * 2018-01-12 2021-09-21 比亚迪股份有限公司 车辆的踏板感模拟器和具有其的车辆
JP6960375B2 (ja) 2018-05-23 2021-11-05 株式会社シマノ 駆動装置および駆動システム
JP2021031000A (ja) * 2019-08-29 2021-03-01 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ 液圧制御ユニット、ブレーキシステム及び鞍乗型車両

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JP5025510B2 (ja) 2012-09-12
JP2009179269A (ja) 2009-08-13
EP2085275A1 (en) 2009-08-05
EP2085275B1 (en) 2011-10-19
US20090195060A1 (en) 2009-08-06

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